Examining Olfactory Cleft Stenosis in Patients Before Nose Surgery

Olfactory Cleft Stenosis and Obstruction on Paranasal Sinus CT Scan in Pre Septo Rhinoplasty Patients Without Respiratory Mucosa Pathology : Normal Variants or Pathologic Findings ?

Observational Central Hospital, Nancy, France · NCT06082193

This study looks at adults who are having nose surgery to see if blockages in their nasal passages affect their sense of smell.

Quick facts

Study typeObservational
Enrollment75 (estimated)
Ages18 Years and up
SexAll
SponsorCentral Hospital, Nancy, France Academic / other
Locations2 sites (Nancy and 1 other locations)
Trial IDNCT06082193 on ClinicalTrials.gov

What this trial studies

This observational study analyzes patients over 18 years old who underwent septoplasty or septorhinoplasty between December 2013 and December 2021. It focuses on the relationship between olfactory cleft stenosis and obstruction as seen on paranasal sinus CT scans and olfactory function measured by the Sniffin Stick test. The study aims to classify the severity of olfactory cleft stenosis and obstruction and correlate these findings with olfactory impairment. Experienced radiologists will evaluate CT scans while remaining blinded to the olfactory test results.

Who should consider this trial

Good fit: Ideal candidates are adults over 18 who are scheduled for septoplasty or septorhinoplasty without any respiratory mucosa pathology.

Not a fit: Patients with existing respiratory mucosa pathology or conditions that affect olfaction will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could enhance understanding of olfactory impairment and improve surgical outcomes for patients undergoing nasal surgery.

How similar studies have performed: While similar studies have explored olfactory function and nasal surgery, this specific approach to correlating CT findings with olfactory impairment is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients over 18 years old who underwent paranasal sinus CT and olfactory test before septoplasty or septorhinoplasty

Exclusion Criteria:

* Respiratory mucosa pathology on CT (polyposis, opacification of the maxillary sinuses, ethmoid cells, frontal sinus, sphenoidal sinus, sinonasal tumor)
* septal perforation
* chronic respiratory rhinitis (allergic, vasomotor, mucoviscidosis)
* pathologie that can alter olfaction (multiple sclerosis, meningioma, post infection such as COVID)

Where this trial is running

Nancy and 1 other locations

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Olfactory ImpairmentOlfactory Cleft stenosisSniffin stick testNon mucosa pathologyOlfactory recessOlfactory Cleft ObstructionOlfactory normal variant
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.